I had to go to my parents with only 11 days sober. My family is a drinking family and being with them has always been one of my biggest excuses to drink...can we say alcohol hidden in the closet?
So I went, and I didn't drink and if anything I cemented my resolve.
Do I think my experience was typical...no. would I suggest anyone do the same....no. but you asked if anyone had experience with this, and this was my experience.
I found the smell of alcohol, repugnant and since I was smelling it the whole time I was there, I felt no desire to drink.
My advice, maybe pass this trip.